Antifriction bearing



R. W. SELLEW.

ANTIFRICTION BEARING.

APPLICA'HON FILED MAY 28, 1921.

Beissued Nov. 22, 1921.

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UNITED STATES PATENT oFncE.

ROLAND WINCHESTER SELLEW, OF NEW BRITAIN, CONNECTICUT, ASSIGNOB TO THE FAINIB BEARING- COMPANY, OF NEW BRITAIN, CONNECTICUT, A. CORPORATION 01 CONNECTICUT.

A'NTIFRIGTION BEARING.

Specification of Reissued Letters Patent. Reigsued NOV, 22 1921,

Original No. 1,375,019, dated April 19, 1921, Serial No. 383,523, filed May 22, 1920. Application for reissue filed May 28, 1921.

T 0 all whom it may concern:

Be it known that I, ROLAND W. SELLEW, a

citizen of the United States of America, re

siding at New Britain, Connecticut, have invented a new and useful Antifriction Be'aring, of which the following is a specification.

My invention relates to so-called unitary or. unit handling bearings, and the same is especially useful as applied to duplex .or double row ball bearings, in which it is desired to have the load on the respective balls carried in opposite oblique directions whereby the finis ed bearing will successfully Withstand both. radial and thrust loads. Heretofore, many means have been devised to facilitate the assembly of such bearings and ordinarily one of the bearing rings has been made of two separate pieces mechanically connected. These methods have not proved entirely satisfactory. By my improvement, each-of the two bearing rings, the inner one and the outer one, is, in its finished state, solid orintegral. This result I accomplish by the use of a fused connection, preferably attained by the welding process. I likewise avoid undue cramping or binding of the bearing rings on the balls.

In the drawings:

Figure 1 is a sectional view of a'bearing of the two row type constructed to embody my invention and made by one process.

. modification.

Fig. 3 is a side elevation of the complete bearing shown in either of the aforesaid figures.

Figs. 4 and 5 are fragmentary or detail views in section.

In the bearingproduced by the method illustrated in Fig. 1, 1 represents the inner bearing ring or element, upon the outer surface of which are two spaced ball tracks separated by a circumferential rib. 4 represents the outer bearing ring or element having on its surface two spaced ball tracks complementary to the aforesaid race-ways on the inner ring. Between these race-ways are located two rows of balls 2-3. In the present instance, I have shown no spacer de- Serial No. 473,386.

vices for the balls, but as such devices are well understood, they may be provided if desired. The outer bearing element is made of two separately formed rings of a cross section, for example, such as shown in Fig. 4. The edges of each of these rings are preferably caused to abut when the bearing is assembled, the same being so designed and proportioned as to properly fit upon the balls with the desired degree of contact pressure when said edges are connected. 5 is a ring-like piece which bridges the adjacent edges of the two rings constituting the outer bearing element, and this piece 5, in the particular form shown, constitutes in effect a fillet. Preferably, the bridging piece is made of a metal corresponding to-the two ring sections, although it may be made of any metal that can be fusiblyconnected therewith so as to secure a strong connection and satisfactory union. The method of assembly is obvious. It will be seen that the balls are placed in a proper position on the bearing element lland then the two parts of the outer bearing element and the surround.- ing ring-like element 5 are placed together and held inany suitable form of holder tions of the outer vbearing element 4 are caused to actually abut and are fused toether. In this case the surrounding ring 5 is omitted. When the parts are butt welded by an electric welding process, it is necessary to press the same together firmly and to guard against pressing the two rlng sections too tightly upon the balls, and so as to prevent undue binding, I preferably introduce one or more thin destructible shims 66 between the ball race-ways or tracks and the balls adjacent thereto. In Fig. 5, I have illustrated one of these shims 6 on an exaggerated scale. Obviously, when the two ring sections of'the outer bearing element are forced hard together, the adjacent destructible shim will act as an adequate spacer, so that as the adjacent edges of said rings are being'fused together, said ring sections will not be forced together so tightly as to properly bind on the balls. After the fusing operation has been completed, the destructible shim .or shims may be cut out or otherwise removed to afford the desired freedom between the bearing elements and the balls, whereby the same may turn evenly and easily. Any suitable material may be employed for the shims, only care should be observed to select a material of uniform thickness throughout so that the finished hearing will be no tighter on one side than on the other. It will be observed that the balls 2 so engage the rings, and Vice versa, that the rings and balls alike are not only held in an assembled state, but also in a proper adjusted relation, the latter being a feature typical of the socalled unitary ball bearing. While the particular process of manufacture constitutes no part of this invention as claimed Y herein, I nevertheless deem it desirable to describe the processes of manufacture as well as the bearing itself so that anyone skilled in the art may understand how such a bearing can be successfully produced. Any roughness or unevenness where the fused connection occurs, may be ground away, and if desired, a proper provision may. be made in the two ring sections whereby a'portion of the surface may be ground off after fusion is completed.

lVhile in many instances it is preferable to employ a welding process for the ourpose of effecting the fused connection a oresaid it should be understood that my invention is not limited to that particular rocess, and while I have shown the outer earing element as the one made up of two rings united by fused conection, my invention is not necessarily limited thereto, nor is said invention llmited to a duplex or double row bearing. Q

What I claim is:

1. A ball bearing of the type described, comprising an inner and an outer bearing ring having complementary race. tracks therein with balls in said race tracks operating to hold said rings in adjusted and operative position, one of said bearing rings be ing formed of two annular ring sections each section having a ball bearing surface forming one of said tracks, and a welded connection between said sections to permanently unite the same.

2. A double row ball bearing of the type described, comprising an inner and an outer bearing ring having two sets of complementary ball race tracks therein, two rows of balls in'said race tracks operating to h old said rings in adjusted and operative 13051131911, one of said" rings being formed of two ring sections each section having one of said race tracks thereon, and a welded connection between said sections to permanently unite the same. i

3. A double row ball bearing of the type described, comprising an inner and an outer bearing ring having two sets of complementary race tracks therein, two rows of balls in said race tracks operating to "hold said rings in adjusted and operative position, one of saidrings being formed of, two ring-like sections each section havlng one of said tracks thereon, and a welded connection between said sections to permanently unite the same, the complementary race tracks being oblique to each other.

4;. A ball bearlng of the type described, comprising an inner and an outer bearmg ring with complementary ball race tracks therein, balls in said race tracks operatlng to hold said bearing rings in assembled and operative position, one of said rings comprising two abutting annular ring sections and a third ring section adjacent the abutting portions of the first two sections, and

a welded connection between all of said sections to'permanently unite the same 5. A ball bearing of the type described, comprising an inner and an outer bearing ring having complementary race tracks therein with balls in said race tracks operating to hold said rings in assembled and operative position, one of said bearing'rings being formed of two annular ring sections, each of said sections having a ball bearing surface thereonvforming one of said'race tracks, and a welded connection at the ad-- jacent edges of said two ring sections operatingto permanently unite said sections.

6. A ball. bearing of the type described, comprising an inner and an outer bearing ring havlng complementary race tracks therein, balls in said race tracks operating to hold said bearing rings in adjusted and operative position, the outer bearing ring being formed of two annular ring sections each section Having a ball bearing surface thereon forming one of said race tracks, and a. welded connection operating to permanently unite said two sections.

- A hearing of the type described compris ng, an lnner and an outer bearing ring havlng complementary race tracks therein with balls in said tracks operating to hold said rings in adjusted and operative position, one of said bearing rings being formed of two annular ring sections each having a ball bearing surface forming one of said tracks and including a ring-like portion br1dg1ng the space between said tracks and overlapping the cylindrical surface of one of said sections, and a fused connection beof two annular ring sections, each section having a ball bearing surface which surfaces cooperate to form the ball race of said element, and means bridging the adjacent edges of said ring sections and overlapping at least one section, and a fused connection between said overlapping surfaces for holding the same against lateral separation.

ROLAND WINCHESTER S ELLEW. 

